Chapter 2. Contents of the Projectopen_jicareport.jica.go.jp/pdf/11705639_06.pdf · 2004-05-06 · 2-1 Chapter 2 Contents of the Project 2-1 Basic Concept of the Project 2-1-1 Objectives

Chapter 2. Contents of the Project

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Chapter 2 Contents of the Project

2-1 Basic Concept of the Project 2-1-1 Objectives of the Project The government of Egypt planed to improve and to strengthen the domestic agricultural structure in the purpose

of improving food demand-and supply balance of the country and increasing agricultural production.

The agriculture in Egypt totally relies on the Nile River as an irrigation water resource, but the irrigation facilities

are deteriorated by aging and aren’t able to provide sufficient irrigation water. Therefore, the government has

prepared the long-term rehabilitation plan, which plans to modernize the irrigation facilities.

The upper Egypt region has a high potential for increasing agricultural productivity, where the government

focuses on the development. In the New Valley region, the largest agricultural land reform project in the country,

whose area is 210,000 ha, is implemented.

This project are to improve and rehabilitate five floating pomp stations in the upper Egypt, which require urgent

implementation, to provide a maintenance barge in order to supply irrigation water with stability, to increase the

irrigated area from 7,620 feddan to 10,400 feddan, to expand cropping area, and to augment 18% of farmers’

income in the area.

2-1-2 Outline of the Project The project will be implemented in Asfun area of Aswan Governorate and Luxol area of Quena Governorate in

the Upper Egypt to achieve the targets mentioned above. The following five (5) floating pump stations will be

improved and rehabilitated.

・ Sahel Alakaba Kebli pump station (Aswan)

・ Al Rakikin Sahel pump station ( Aswan)

・ Blowkher pump station (Aswan)

・ El Ghorera (Luxor)

・ El Biadiea El Ollia (Luxor)

The project components are composed of providing equipments necessary for replacement for the five (5) floating

pump stations, and also providing fund to procure a maintenance barge.

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2-2 Basic Design of the Requested Japanese Assistance 2-2-1 Design Policy 2-2-1-1 Planning Design to Natural Conditions

(1) Considerations on Climate

Considerations for High Temperature and Storm

The maximum temperature reaches 51℃ in summer in the region. Moreover, sandstorm occurs between April and

May. The following considerations are to be given:

1） wall material with heat insulation nature,

2） adequate ventilation, and

3） equipment to be shaded from direct sunshine.

All pump stations under Phase (Ⅰ) and Phase (Ⅱ) are designed paying due consideration on the above matters.

Therefore, Phase (Ⅲ) project will also apply the same considerations.

2-2-1-2 Considerations on Flow Regime of the Nile River

Considerations for Fluctuation of Water Level

Discharge of the Nile varies by season, and its water level fluctuates largely by season. Water level difference

between the maximum and the minimum water levels reaches as much as 4m. Pump head therefore has to be

designed in consideration of fluctuation of water level.

Considerations for Floating Weeds

Plenty of weeds are flowing down in the Nile River. Pumps are to be protected from these weeds.

Consideration for Surges

Large-scale passenger boats frequently navigate in the Nile River. These boats cause surges to the floating pump

stations. Surges become larger when ship route gets close to the pump station. It is necessary to anchor the barge

as stable as possible, while joint pipe between the discharge pipe and the discharge tower designed is fixed to be

flexible.

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2-2-1-3 Social Conditions

In the project sites, floating pump stations should be rehabilitated urgently, since they are the only irrigation water

supply facilities available in the area. However, it is necessary to avoid the frequent or long time suspension of

pump operation. Fortunately, each pump station is located along the Nile River, are easily accessible from the

nearest trunk road. However, as some pump stations have only narrow access from the trunk road, heavy trucks or

equipment cannot pass or access to the sites.

2-2-1-4 Floating Pump and its Specifications

(1) Type of Pumping Facilities

The type of pump to be rehabilitated will be either of floating type or fixed type. Floating type can correspond to

fluctuation of water level, its investment cost is lower, it does not require the land for installation and it is easy to

be maintained. Therefore, floating type has more advantages than fixed pump as shown in the following table.

Floating pump type shall, therefore, be selected for the Project.

Table 2-2-1 (1) Types of Pump Facilities Item Requirement Floating Type Fixed Type Remarks

Fluctuation of Water Level

Max. 4.1m good poor Barge adjustable for floating pump.

Construction Economy good poor Lower investment cost for floating pump.

Land Acquisition

Installation land good poor Narrower land for floating pump.

O&M Availability of maintenance institution

good poor Barge movable to workshop.

Sediment Dredging in front of stations

good poor Easier dredge for floating pump.

Overall evaluation good poor Floating type is much better than fixed type

(2) Necessity for renewing pumping facilities

The results of survey on the status of facilities in each pumping station show that the proposed pumping stations

should be rehabilitated as early as possible.

Control Panels of pump stations are also of very old type, manufactured by outdated standards, less conscious of

safety measures. Some of them are equipped with bare cable and mounted without adequate backdoor. Surface of

panels are damaged and paint is peeled off as well as corrosion is fast advancing. Therefore, all equipment and

materials for pump stations should be rehabilitated including replacement of control panels.

(3) Type and Capacity of Pump

Based on the monthly water requirement and monthly water level of the Nile River, type and capacity of pump

should satisfy the following requirements:

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1） Function against water level variation as much as 4m(maximum 4.1m) of the Nile River,

2） Water discharge adjustable to the minimum requirement,

3） High suction capacity for loading on barge,

4） To cope with narrow installation space and transportation, the pump height must be designed as low as

possible,

5） Stand-by pump is not considered because of more than one pump will be installed, and

6） Standards applied are Japan Industrial Standards (JIS), the Standards of the Japanese Electrical

Committee (JEC), the Standards of Japan Electrical Manufacturers Association (JEM) and Rules of

Nippon Kaiji Kyokai (Rules for the Survey and Construction of Steel Ships, Steel Barges). However,

German Standards (DIN) shall be applied for flanges of connection pipe as the same is applied for the

flanges of the existing discharge towers.

(4) Calculation Criteria of Total Head and Required Power

Based on the results of the survey for natural conditions and water level data from the MED, total head and

required power of pump are calculated adopting the following formula:

1） Calculation of Total Head

H=Ha + H1 = Ha + h1 + fn･V2/2g L V2 h1 = f x x D 2g

134 1 f= x …………Hazen&Williams formula

C1.85 D1/6･V0.15 Where、

H： Total head (m)

Ha： Actual head (m)

H1： Total head loss (m)

h1： Head loss of discharge pipe (m)

L： Overall length of discharge pipe (m)

D： Diameter of discharge pipe (m)

V： Velocity of water flow (m/s)

g： Acceleration of gravity (m/s2)

C： Constant which varies with pipe conditions

fn： Coefficient value of various head losses

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2） Calculation of Required Power

Calculation of Shaft Horsepower 0.163･Q･H･γ

L= η/100

Where,

L： Shaft Horsepower (kW)

Q： Capacity (m3/min)

H： Total head (m)

γ： Specific weight of pumped liquid

(Natural water: specific weight= 1.0)

η： Pump efficiency (%)

(Pump efficiency estimated from the diameter: 75～85%)

Power Required for Prime Mover

P=L(1+A)/ηt

Where,

P： Power required for prime mover (kW)

L： Pump horsepower (kW)

A： Excess (Excess of motor is usually used 0.1 - 0.15.)

ηt： Transmission efficiency (Direct coupling is usually used 1.0.)

(5) Specifications of equipment

Pump

The following considerations are to be taken for determining the specifications of pump.

1） Capacity of pump shall satisfy the monthly water requirements,

2） From viewpoints of O & M, compatibility of equipment and spare parts between stations including those

of the rehabilitated ones shall be considered to the full extent in phase I and phase II,

3） Considering the above (2), various pumps of per-unit capacities and total head shall be grouped into a

number of typical pumps with standardized specifications,

4） Considering the wide change in seasonal water requirements and securing the pump operation, two units

shall be installed per barge.

5） Pump shall be of typical type as possible.

6） Considering that water requirement is high but total head is low in summer and water requirement is low

but total head is high in winter, pump specifications shall satisfy the seasonal water requirements. The

rated point on the performance curve is found as follows:

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Figure 2-2-1 (1) Pump Performance and Rated Point

Prime Mover

The followings shall be considered for determining specifications of prime mover:

1） As the existing pump stations have been operated by the electricity since 1989, electrical motors shall be

used taking into consideration the easier operation and maintenance,

2） Considering that the motor would be loaded on barge, smaller and shorter motor shall be selected,

3） Higher speed of typical motor shall be selected,

4） For low head and low speed pump, number of poles shall be increased. Reduction gear shall not be used

because of much difficulty for operation and maintenance. Pump and motor shall be stationed on the

same base with direct coupling, and

5） Motor insulation and frame type shall be determined, considering that the proposed sites are high in

temperature and have heavy storm with sand.

Barge

The following considerations are to be taken for determining the barge specifications:

1） Size of Barge

Required spaces of equipment (pump, motor, valves, control panel and others) and for operation and

maintenance shall be a basis for determination as follows:

- Operation space

- Maintenance space ----------- Approx. 1m in front and sides.

- Desk work space

- Walk space ------------------------------------------------ Approx. 0.7m in width

- Space for hoist and bollard -------------------------- Approx. 1m in operation side

Winter

Spring, Autumn

Summer

Q-H Curve

Efficiency Curve

Capacity

Tota

l Hea

d Rated Point（Pump Selection Point）

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2） Depth of Barge

Depth of Barge (H) = Freeboard (h) + Draft (d)

a. Freeboard (h) -----Height of gunwale above water

The followings are to be considered for determining the freeboard:

- The maximum flow velocity (0.5m/s) in the Nile and wave height (1.0m) by boats in the Nile,

- Hydraulic inertia by suction and discharge as well as rotational reaction, and

- Allowance for other factors (0.2m)

b. Draft (d) ----- Depth of barge bottom below water surface

Followings are to be considered for determining the draft:

- Draft height by buoyancy calculation,

- Draft height to secure buoyancy equivalent to the total weight of equipment and materials on the barge,

and

- The center of gravity be lowered till the water line so as maintain the stability and to be durable against

water, flow velocity and winds.

c. Structure of Barge

The “Rules for the Survey and Construction of Steel Ships, Steel Barges by Nippon Kaiji Kyokai” shall be

applied for the criteria for structure of barge.

Pump House

Pump house on the barge shall be designed taking into account the followings of installation methods and

policies:

- Pump house shall be provided with a roof and walls to protect the equipment from wave splash, sand

storm, etc.,

- Prevention of heat rise in the house and equipment from direct sunshine into the house,

- Natural ventilation,

- Manual hoist shall be equipped above the floor for maintenance of pump, motor, etc.,

- The structure of the house equipped with the hoist shall be of steel frame to bear the weight of pump,

motor or etc.,

- The structure of supporting frame for connection pipe shall be of steel frame to bear the weight of

connection pipe,

- Walls shall be of water-proof plywood with protection paint,

- Roof materials shall be of slate for light weight,

- Lighting system shall be equipped with inside and outside the house for night-time working, and

- Hanger board for maintenance tools shall be equipped.

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2-2-1-5 Policy for Maintenance Barge

Considering the suitable maintenance and time available for maintenance and repairing, maintenance barge shall

be procured. Repairing, assembling, disassembling, transporting spare parts, inspecting the pump facilities, etc

shall be conducted with the maintenance barge. Policy of designing for maintenance barge shall include the

followings:

Barge

The following considerations are to be taken for determining the barge specifications:

1） Size of Barge

Required spaces of loading and unloading and those of equipment (spare shelves, tables, tools shelves,

generator, welder, hand truck, etc.) and those for assembling and disassembling a pump or motor shall be a

basis for determination as follows:

- Spare shelves, tools shelves ----------------------------- Approx. 1m in front.

- Working table, generator, welder ---------------------- Approx. 1m in front and sides.

- Desk and hand truck space ----------------------------- Approx. 1m in front

- Loading and unloading space --------------------------- Approx. 3m in width

- Walk space ---------------------------------------------------- Approx. 0.7m in width

- Space for hoist and bollard ------------------------------ Approx. 1m in operation side

2） Depth of Barge

Depth of Barge (H) = Freeboard (h) + Draft (d)

a. Freeboard (h) -----Height of gunwale above water

The followings are to be considered for determining the freeboard:

- The maximum flow velocity (0.5m/s) in the Nile and wave height (1.0m) by boats in the Nile,

- Hydraulic inertia by suction and discharge as well as rotational reaction, and

- Allowance for other factors (0.2m)

b. Draft (d) ----- Depth of barge bottom below water surface

The followings are to be considered for determining the draft:

- Draft height by buoyancy calculation,

- Draft height to secure buoyancy equivalent to the total weight of equipment and materials on the barge,

and

- The center of gravity be lowered till the water line so as maintain the stability and to be able to endure

against water, flow velocity and winds.

c. Structure of Barge

The “Rules for the Survey and Construction of Steel Ships, Steel Barges by Nippon Kaiji Kyokai” shall be

applied for the criteria for structure of barge

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House

House on the barge shall be designed taking into account the followings of installation methods and policies:

- House shall be provided with a roof and walls to protect the equipment from wave splash, sand storm,

etc.,

- Prevention of heat rise in the house and equipment by direct sunshine into the house,

- Natural ventilation,

- Manual hoist shall be equipped above the floor for maintenance of pump, motor, etc.,

- The structure of the house equipped with the hoist shall be of steel frame to bear the weight of pump,

motor or etc.,

- The structure of A frame for loading and unloading shall be of steel frame to bear the weight of them,

- Walls shall be of water-proof plywood with protection paint,

- Roof materials shall be of slate for light weight, and

- Lighting system shall be equipped inside and outside the house for night-time working.

Equipment and Tools for Maintenance Barge

Based on the purpose of the maintenance barge, equipment and tools shall be equipped with the barge as follows:

(a) General Equipment and Tools,

(b) Grinding Equipment and Tools,

(c) Assembling and Disassembling Equipment and Tools,

(d) Checking and Measuring Equipment and Tools,

(e) Hanging Equipment and Tools,

(f) Equipment and Tools for Electricity,

(g) Measuring Equipment and Tools, and

(h) Supporting Equipment and Tools.

2-2-1-6 Policy on Operation and Maintenance

(1) As each existing pump station has 8-9 staff and they have enough experiences for maintaining the pump

facilities, they will also maintain the pump facilities to be procured,

(2) Large-scale maintenance shall be conducted at maintenance institution and dock located in Aswan. For

emergency, institution in Luxor shall be used,

(3) Daily checking, maintenance, adjustment of pump facilities shall be conducted in each pump station.

However, periodical checking, replacing the moving parts for pump and motor shall be conducted in the

maintenance barge to be procured,

(4) Considering that it is difficult to repair or apply high technology machining for the parts of pump and motor

with the existing workshop equipment. However considering that MED has many experiences for operation

and maintenance, adequate spare parts shall be selected, and

(5) Spare parts to be procured shall also be selected taking into account the conditions of spare parts usage of

Phase-1 and Phase-2 projects.

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2-2-1-7 Policy of Subject Equipment and Settings

(1) Subject equipment

Floating pump facilities

Equipment and materials to be procured by this Project shall be from pumping station up to connecting pipe

as the same style as the Phase-1 and Phase-2 Projects as follows:

- Pump facilities: Main pump, main motor, vacuum pump, valves, suction pipe, delivery pipe,

control panel, connecting pipe (incl. ball joints)

- Barge: Main body, pump house, hoist facilities, anchor facilities.

Maintenance Barge

Maintenance barge shall be equipped with hoist facilities for loading & unloading equipment to be repaired,

anchor facilities and maintenance tools.

(2) Policy on equipment settings

- Connecting the pipe to the tower can be adjusted by changing the connecting position to meet the

seasonal fluctuation of water levels. Connecting pipe with ball joints, which have elasticity and

flexibility, can meet the daily fluctuation of water levels. To protect against the possibility of inner pipe

from slipping off, strength of stopper shall be increased and caution color paint shall be painted,

- Number of anchor facilities for each barge is to be increased to four for protecting the effect to the

connecting pipe by waves. Wires for anchors shall be larger by one class,

- To counter measure against waterweeds plugging strainer at pump suction, washer pump shall be

equipped. Supporting materials to the outlet pipe shall be supplied so that it is easier for operator to

operate the pipe outlet, and

- To set the accurate operation and maintenance time for all of the operators, a clock shall be equipped in

the pump house.

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2-2-2 Basic Plan 2-2-2-1 Plan of Irrigation (1) Service area

Proposed service area for each pump station is as follows:

Table 2-2-2(1) Proposed Service Area

No. Pump Station

Area

Requested

(Feddan)

Existing

Service Area

（Feddan）

Reversion

Area

(Feddan)

Extension

Area

(Feddan)

Total

Service Area

（Feddan）

22 Sahel Alakaba

Kebli 250 250 － 50 300

23 Al Rakikin Sahel 150 150 －－ 150

24 Blowkher 1,500 2,000 － 400 2,400

25 El Ghorera 1,600 1,000 1,450 － 2,450

26 El Biadiea El Ollia 1,700 4,220 － 880 5,100

＊1Feddan=0.42ha

To reclaim the extension area, it is important to include provision of irrigation facilities such as secondary canals

by the governmental support (MED and/or ID) due to extensive area. Accordingly, as a basic concept, inclusion of

the extension area in the service area will be determined in the case that certain intention will be given in the

minutes of discussion to provide the budget and to construct the irrigation facilities by the Irrigation Department.

The reasons of including the extension area are mentioned as follows:

As one of solution to alleviate the poverty in Upper Egypt, the increasing of agricultural production becomes

important issue in today. Then, horizontal expansion, means expansion of area for cultivation, also is needed

together with vertical expansion such as enhancement of technique for cultivation, stable supplement of irrigation

water, effective water management and so on. According to the results on field survey, the average cultivable area

holding by each farmer in this area is little compare with the number of whole Egypt one. It is very important

purpose for this project to improve this situation. Then, the project includes the extension area considering the

characteristic of each area.

a. Sahel Alakaba Kebri (50 feddan)

This expansion area has already been reclaimed in some portion due to be irrigated by grand water up to twenty

years ago. If the irrigation water will be supplied to this area, this area will be able to use immediately as

cultivating area with simple pump. Then, it is available to include this expansion area as total service area in the

project.

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b. Blowkher (400 feddan)

The expansion area lies along the south side of the Abadhy drain. the topography is terrace with from 95 to 100 m

of elevation. This area consists of sandy soil. In some area beside the drain is cultivated as upland field using little

drainage water. However, it seems to be cultivated in winter season only because of the shortage and the pollution

of drainage water in summer season. If the irrigation water will be supplied to this area enough, this area will be

able to cultivate. To convey the irrigation water from Nile River, it needs to construct the siphon, small pump and

small canal on the field for crossing the Abadhy drain. Concerning this, it is be able to judge to be constructed

these facilities by farmers themselves, then it is available to include this expansion area as total service area in the

project. However, because the area where is over 100 m of elevation undulates much, it needs a large amount of

investigation to reclaim this undulated area and to engage it as development project lead by government.

Therefore, where the over 100 m area of elevation does not include to the project.

c. El Biadeia El Ollia (880 feddan)

Almost of the expansion area lies on flooding area and the topography is flat. Therefore, if the irrigation water

will be supplied to this area enough, it will seem to be cultivated easily. In except the flooding area, the area of

under 95 m elevation forms terrace of the Nile River, the are of over 95 m elevation is rock hill or desert. The

reclamation by farmers progresses up to the area under 95 m of elevation. In the area covered by higher canal of

elevation almost area has a few area, the remaining area is 250 feddan due to be reclaimed already in the almost

area. On the other hand, in the area covered by lower canal of elevation has already reclaimed up to 90 or 91 m of

elevation by pumping irrigation and in the some portion where is up to around 95 m also has reclaimed. Therefore,

it is available to include the area of up to around 95 m of elevation to this project. However, the over 95 m area

will not include this project with the reasons as mentioned follows: There is possibility to develop the over 95 m

area in future. Then, it needs a large amount of investigation to reclaim this area, because there is 10 m difference

of elevation from main canal and the distance reaches over 1 km. To develop this area, it needs the development

project as the government basis.

(2) Cropping Schedule

While farmers freely decide the selection of the crops, the existing cropping pattern of each service area is

considerably influenced by the average size of farmland owned by farmers and by accessibility to the market.

These matters are significantly characterized by existence of the sugarcane cultivation in the area as well. In the

area without sugarcane (No.22 Sahel Alakaba Kebli, No.23 Al Rakikin Sahel), there are many small-size farmers

comparatively who earn their livelihood by income from livestock auction and migrant working as well as

self-consumption of their products. In the above area, increment of planting area is expected for cash crops such

as vegetables.

On the other hand, farmers have strong inclination toward enlargement of sugarcane production in the area where

sugarcane is currently cultivating as large as more than 50 to 60% of the existing area (No.24 Blowkher, No.25 El

Ghorera, No.26 El Biadiea El Ollia). Accordingly, increase of planting area for the sugarcane is expected in the

cropping schedule in these areas.

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Wheat, which is the major crop in the winter season, is applied to the self-consumptive crop for the livelihood of

farmers in all areas. Since the percentage of planting area for wheat to meet with the quantity for self-consumption

is estimated about 18 to 20% of the service area in average, the said percentage is basically applied to the

proposed cropping area of wheat with some adjustment taking account of the average size of the farmland owned

by farmers by each area.

As the maize and corn in summer are the secondary crops of the berseem in winter, cropping areas for these crops

are estimated to balance each other.

Accordingly, the following cropping schedule is proposed for each service area in accordance with the above

consideration.

Table 2-2-2(2) Proposed Cropping Pattern

(3) Consumptive use of crops

Consumptive use of water estimated by the Irrigation Department (Table 2-2-2(3)) is basically applied to the

Project.

As for consumptive use of water for the sugarcane, six (6) data are found from the data obtained in the last site

survey and in the past project. Out of them, three (3) data are almost the same figures. The data based on the

research result in 1994 by the Water Management Research Institute which has been introduced to the Phase 2

Project is applied to this Project as the most appropriate one among them through the comparison studies

including the comparison with the estimation result by the modified Penman method.

No.22 No.23 No.24 No.25 No.26Season Crops Unit Sahel Alakaba Kebli Al Rakikin Sahel Blowkher El Ghorera El Biadiea El Ollia

1.2feddan/houshold 0.3feddan/houshold 2feddan/houshold 1feddan/houshold 1feddan/housholdArea Fedn. 300 150 2,400 2,450 5,100 10,400.0

Winter % 20 5 13 18 17 16.2Season Fedn. 60.0 7.5 312.0 441.0 867.0 1,687.5(10～4) % 4 10 4 2.2

Fedn. 12.0 15.0 204.0 231.0% 8 15 6 4 5 5.2

Fedn. 24.0 22.5 144.0 98.0 255.0 543.5% 8 10 6 4 5 5.2

Fedn. 24.0 15.0 144.0 98.0 255.0 536.0% 5 10 0.3

Fedn. 15.0 15.0 30.0% 5 5 0.2

Fedn. 15.0 7.5 22.5% 30 25 5 4 4 5.3

Fedn. 90.0 37.5 120.0 98.0 204.0 549.5Summer % 11 22 9 12.1Season Fedn. 264.0 539.0 459.0 1,262.0(5～9) % 65 60 60 58.6

Fedn. 1560.0 1470.0 3060.0 6,090.0% 5 1.2

Fedn. 122.5 122.5% 8 8 5.8

Fedn. 192.0 408.0 600.0% 30 25 5 4 4 5.3

Fedn. 90.0 37.5 120.0 98.0 204.0 549.5% 42 40 9 6.2

Fedn. 126.0 60.0 459.0 645.0Nile % 30 25 5 4 4 5.3

Seasons Fedn. 90.0 37.5 120.0 98.0 204.0 549.5% 20 20 5 5 5 5.6

Fedn. 60.0 30.0 120.0 122.5 255.0 587.5

Vegetables

Corn

Vegetables

Fruits

Maize

Sugarcane

Banana

Sesami

Average& Total

Wheat

Broad Beans

Clover

Berseem

Onion

Garlic

Vegetables

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Table 2-2-2(3) Consumptive Use of Crops in Upper Egypt

(4) Irrigation efficiency

Overall irrigation efficiency is estimated at 0.5 based on the standard irrigation efficiencies by FAO and ICED.

Interpretations of irrigation efficiencies applied are as follows:

Conveyance efficiency Ec

Conveyance efficiency Ec = 0.90 is applied because of the following conditions.

- In general, rotational irrigation method with partition into 2 blocks at interval of about 7 days is dominantly

carried out in the service area.

- During 7 days, water flow is always maintained in the irrigation canal.

- It is judged from the above conditions that the canal flowing corresponds with “continuous supply with no

substantial change in flow” that gives the conveyance efficiency at 0.9.

Field canal efficiency Eb

Field canal efficiency Eb = 0.70 is applied because field blocks feeding by the field canal unlined is less than 20

ha in size that gives the field canal efficiency at 0.70.

Field application efficiency Ea

Field application efficiency Ea = 0.80 is applied because irrigation method in the service area is classified as a

basin irrigation method which gives the field application efficiency at 0.80.

Then, the overall efficiency is calculated as follows;

E = Ec x Eb x Ea = 0.90 x 0.70 x 0.80 = 0.504 → 0.5

Season/CropsJan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.

Winter SeasonWheat 450.0 458.0 460.0 452.0 249.0 520.0 2589.0Broad Beans 362.0 368.0 533.0 100.0 620.0 618.0 2601.0Clover 809.0 920.0 860.0 820.0 900.0 950.0 930.0 500.0 910.0 800.0 600.0 590.0 9589.0Berseem(Fodder) 275.0 402.0 245.0 275.0 1197.0Onion 550.0 551.0 568.0 515.0 373.0 426.0 2983.0Garlic 390.0 388.0 413.0 364.0 655.0 874.0 995.0 4079.0Vegetables 650.0 726.0 108.0 358.0 390.0 493.0 2725.0Summer SeasonMaize 423.0 805.0 749.0 859.0 459.0 3295.0Sugarcane 154 240 254 350 792 892 1,239 1,344 1,144 930 699 371 8408.1Banana 160.0 245.0 260.0 360.0 800.0 900.0 1240.0 1350.0 1150.0 1000.0 700.0 380.0 8545.0Sesame 350.0 603.0 636.5 602.0 424.75 2616.3Vegetables 550.0 556.0 1090.0 1186.0 1345.0 1122.0 203.0 6052.0Corn 686.0 904.0 1154.0 565.0 3309.0Other Plants 214.2 596.4 646.8 638.4 529.2 2625.0Nile SeasonsVegetables 1429.0 1836.0 1720.0 4985.0Fruits 250.0 220.0 225.0 308.0 376.0 497.0 484.0 469.0 440.0 425.0 308.0 303.0 4305.0Data Source: irrigation Department AswanNotes: Above table shows consumptive use of crops, which are not incuding any losses such as conveyance and application.

Winter Season Summer Season Winter Season TotalConsumptive Use of Water of Each Month (m3/month/feddan)

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(5) Irrigation hour

As the same with Phase 2 Project, fourteen (14) hours per day is applied to the irrigation hour based on the

following aspects.

- Hours of sunlight at the project area is about 14 hours in the summer season in which the maximum volume

of irrigation water is required

- Farmers have a custom to work while there is day-light because of fear of existence of poisonous snakes when

it is dark.

(6) Village water

Village water is estimated at 10% of irrigation water for garden and others.

(7) Irrigation water demand

Proposed daily demand of irrigation water is calculated by the following equation:

Daily irrigation water demand =∑(Cropping area x Daily consumptive use of water) / Overall efficiency 0.5

Proposed irrigation water demand (m3/s) is calculated as follows adding village water (10%) and converting

24hours consumption to 14 working hours.

Proposed irrigation water demand (m3/s) = Daily irrigation water demand x (1 + 0.10) x (24 / 14) / 86,400

Irrigation water demand calculated for each month is shown in the following table 2-2-2(4).

Table 2-2-2(4) Proposed Monthly Irrigation Demand

Area(feddan) Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.

Total Requirement 250 0.17 0.20 0.14 0.23 0.28 0.30 0.23 0.28 0.26 0.26 0.14 0.17Ex. Pump Capacity 0　m3/s x 2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00Required Pump Capacity 0.17 0.20 0.14 0.23 0.28 0.30 0.23 0.28 0.26 0.26 0.14 0.17Total Requirement 150 0.10 0.13 0.10 0.13 0.17 0.16 0.13 0.16 0.15 0.15 0.09 0.10Ex. Pump Capacity 0 m3/s x 2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00Required Pump Capacity 0.10 0.13 0.10 0.13 0.17 0.16 0.13 0.16 0.15 0.15 0.09 0.10Total Requirement 2,000 0.76 1.07 0.83 1.19 1.92 2.20 2.76 3.18 3.03 2.28 1.66 1.13

Ex. Pump Capacity 0.85m3/s x 2 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70Required Pump Capacity - - - - 0.22 0.50 1.06 1.48 1.33 0.58 - -Total Requirement 2,450 0.91 1.27 1.02 1.44 2.15 2.65 3.50 3.93 3.80 2.87 2.00 1.40

Ex. Pump Capacity 0.50m3/s x 2 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00Required Pump Capacity - 0.27 0.02 0.44 1.15 1.65 2.50 2.93 2.80 1.87 1.00 0.40Total Requirement 4,220 1.64 2.25 1.85 2.42 4.06 4.74 5.96 6.41 5.76 4.31 3.44 2.46

Ex. Pump Capacity 1.30m3/s x 2+2.0m3/s x 3 2.60 2.60 8.60 8.60 8.60 8.60 8.60 8.60 8.60 2.60 2.60 2.60

Required Pump Capacity - - - - - - - - - 1.71 0.84 -El Biadiea El Ollia, the Fixed Pump (2.0m

3/s x 3units) can't operate during winter from Oct. to Feb. due to low water level of the Nile.

Description

Unit : m3/secWinter Season Summer Season Winter Season

2 - 16

(8) Proposed floating pump capacity

Existing floating pump facilities at the No.22 Sahel Alakaba Kebli and No.23 Al Rakikin Shahe will be entirely

replaced by new floating pumps. While, existing fixed pump facilities and a part of floating pumps at the three (3)

stations, i.e. No.24 Blowkher, No.25 El Ghorera and No.26 El Biadiea El Ollia, are found still able to operate

further based on the remaining life and good maintenance of pump facilities. Then the proposed floating pump

capacities of those pump stations are determined by subtracting available existing pump capacities from the

irrigation water demand at each pump station.

Available capacity of existing fixed pump is estimated by the following concepts.

a. All of fixed pump stations are equipped with three or four units of pump. Among the units of pump in each

station, one unit is always kept as a stand-by pump. Accordingly, one unit of fixed pump is regarded as a

stand-by pump and eliminated from available capacity of existing fixed pumps.

b. At No.22 El Biadiea El Ollia pump station, the existing fixed pumps can not be operated due to the

cavitations when the water level of the Nile is low in winter and irrigation water is supplied by the floating

pump only which is installed by the Phase 1 Japan’s Grant Aid Project. Although irrigation water required

would be satisfactory fed by the remaining existing pumps in summer, shortage of irrigation water will arise

in winter. Therefore, the proposed floating pump capacity is determined in winter to fulfill such shortage.

The period that the existing fixed pumps can not be operated due to low water level in the Nile is when the

discharge of the Nile is less than 120MCM/day (approximately 1,390m3/s). Referring to the water release

schedule of Aswan High Dam, the release discharge during the period from October to February is below

120MCM/day. Therefore, it is judged that the fixed pumps cannot be operated from October to February in

the year generally. According to the above conditions, the pump capacity required to the new floating pump in

Biadiea El Ollia will rise to its maximum in October.

Accordingly, the monthly capacities required to the new pumps are calculated as shown in the Table 2-2-2(5) .

Table 2-2-2(5) Monthly Pump Capacity Required

Area(feddan) Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.

Total Requirement 300 0.20 0.24 0.17 0.27 0.34 0.36 0.27 0.34 0.31 0.32 0.17 0.20Ex. Pump Capacity 0　m3/s x 2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00Required Pump Capacity 0.20 0.24 0.17 0.27 0.34 0.36 0.27 0.34 0.31 0.32 0.17 0.20Total Requirement 150 0.10 0.13 0.10 0.13 0.17 0.16 0.13 0.16 0.15 0.15 0.09 0.10Ex. Pump Capacity 0 m3/s x 2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00Required Pump Capacity 0.10 0.13 0.10 0.13 0.17 0.16 0.13 0.16 0.15 0.15 0.09 0.10Total Requirement 2,400 0.91 1.28 0.99 1.43 2.31 2.64 3.31 3.82 3.63 2.74 2.00 1.35

Ex. Pump Capacity 0.85m3/s x 2 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70Required Pump Capacity - - - - 0.61 0.94 1.61 2.12 1.93 1.04 0.30 -Total Requirement 2,450 0.91 1.27 1.02 1.44 2.15 2.65 3.50 3.93 3.80 2.87 2.00 1.40

Ex. Pump Capacity 0.50m3/s x 2 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00Required Pump Capacity - 0.27 0.02 0.44 1.15 1.65 2.50 2.93 2.80 1.87 1.00 0.40Total Requirement 5,100 1.98 2.72 2.23 2.93 4.90 5.73 7.20 7.75 6.97 5.21 4.15 2.97

Ex. Pump Capacity 1.30m3/s x 2+2.0m3/s x 3 2.60 2.60 8.60 8.60 8.60 8.60 8.60 8.60 8.60 2.60 2.60 2.60

Required Pump Capacity - 0.12 - - - - - - - 2.61 1.55 0.37Note : At No.26 El Biadiea El Ollia, the Fixed Pump (2.0m3/s x 3units) can't operate during winter from Oct. to Feb. due to low water level of the Nile.

Pump Station Description

Unit : m3/secWinter Season Summer Season Winter Season

No.26 El Biadiea El

Ollia

No.22Sahel Alakaba

KebliNo.23

Al RakikinSahel

No.24Blowkher

No.25 ElGhorera

2 - 17

2-2-2-2 Plan of Pump Stations (1) Application Standards

Floating pump stations consist of pump facilities, barges, etc. According to the aforementioned section “2-1

Basic Design of the Project”, standards for application to the equipment and works shall be the current issues of

the followings:

Table 2-2-2(6) Standards for Application

Equipment and Works Standards

Material and works of pumps, motors, valves,

suction and delivery pipes, control panels,

connection pipes (incl. ball joints)

Japan Industrial Standards（JIS）

Electrical equipment as motors, control panels,

etc.

Standards of the Japanese Electrical Committee

(JEC),

Standards of Japan Electrical Manufacturers

Association（JEM）

Structure of barges Rules of Nippon Kaiji Kyokai（Rules for the

Survey and Construction of Steel Ships, Steel

Barges）

Note: Since inlets at discharge tower are in German standards (DIN), flange joints to be connected

to the inlets shall be manufactured with the same standards.

(2) Specifications of Equipment

Main Pump

Specifications of main pump shall be determined taking into account the followings:

a. Type of Pump

Taking into consideration that pump will be installed on barge, have a high efficiency, have a high suction

ability and be easy to maintain, best type of pump shall be of double suction volute pump.

b. Pump Specifications

To be determined the specifications (capacity, total head and number of units) of pump, the followings shall

be taken into consideration:

- Based on the irrigation plan, total capacity shall satisfy the monthly water requirements,

- Considering that it shall be irrigation pump, it is necessary to disperse the pump damages, and pump

shall be installed on barge, two pumps shall be the best for one barge.

- Considering the above, specifications of two pumps on the barge shall be same. Pump specifications of

various barges shall be grouped into and selected typical specifications.

2 - 18

Pump specifications plan are obtained after calculations of total head, required power and selection of rated points

as follows:

Table 2-2-2(7) Specifications of Pumps Pump Specification Plan No. Name of Pump Stations Water

Requirement (m3/s)

Actual Head (m)

Head Loss (m)

Calculated

Head Loss (m)

Capacity per unit

(m3/s)

Total Head(m)

Number of

unit

Capacity

(m3/s)

Shaft Hoursepower(kW)

22 Sahel Alakaba Kebli (300 feddan) Extension 50 feddan

0.24 (Apr.) 0.36 (Jun.) 0.20 (Dec.)

7.20 5.20 9.30

1.78 3.11 0.99

8.98 8.31 10.29

0.20 10 2 0.4 27

23 Al Rakikin Sahel (150 feddan) Extention: None

0.13 (Apr.) 0.17 (May) 0.16 (Jun.) 0.10 (Dec.)

5.46 4.57 3.90 7.10

1.34 2.26 2.01 0.80

6.80 6.83 5.91 7.90

0.10 8 2 0.2 11

24 Blowkher (1,332 feddan) Extension 400 feddan

0.94 (Jun.) 2.12 (Aug.) 1.04 (Oct.) - (Dec.)

5.90 6.10 6.99 7.85

0.57 2.83 0.69

-

6.47 8.93 7.68

-

1.00 11 2 2.0 127

25 El Ghorera (1,827 feddan) Extension: None

0.44 (Apr.) 1.65 (Jun.) 2.93 (Aug.) 0.40 (Dec.)

6.63 4.75 5.15 8.60

0.06 0.80 2.50 0.05

6.69 5.55 7.65 8.65

1.45 12 2 2.9 200

26 El Biadiea El Ollia (2,554 feddan) Extension 880 feddan

- (Jun.) 2.61 (Oct.) 1.55 (Nov.) 0.37 (Dec.)

17.65 19.58 20.15 21.10

- 6.92 2.58 0.20

- 26.50 22.73 21.30

1.30 28 2 2.6 419

Note： 1. Pumps for No. 26 El Biadiea El Ollia pump station will be as same as that for Phase-1 Project.

2. For No. 26 El Biadiea El Ollia pump station, total head shall be 28m taking into consideration that pumps will be

simultaneously operated with those for Phase-1.

Detailed determination of pump specifications and rated points are referred to Annex 8 “Pump Discharge and Require

Head” attached herewith.

c. Stand-by Pump

- Generally, stand-by pump for irrigation are rarely installed.

- The survey results indicate that no pump stoppage by mechanical trouble wad found other than by

power failure. Power failure was also rarely.

- MED has put much stress on operation and maintenance and established a concrete system for O&M.

Considering the above, no stand-by pump shall be installed, however, stock and supply of spare parts

shall be reinforced instead.

Main Motor

Following considerations are to be taken for determining the specifications:

a. Type of Motor

- Considering that the temperature in the sites is high and sites have strong storm with sand, type of motor

for best selection shall be F class insulation and total enclosed.

- Taking into account that the motors would be installed on the barge and they shall be small and short,

2 - 19

squirrel cage type shall be the best. It has the better features like that it is compact structure and requires

narrow installation space and easy O&M as well as lower cost.

- Considering the marine freight, motors shall be of tropic and damp proof type.

b. Required Horsepower

Required horsepower shall be calculated with the pump shaft horsepower. Considering the pump size and

standards type of motor, specifications of motor shall be determined as follows:

Power source will be supplied as 380V, 50Hz through transformers at the sites. However, power source 6,000V,

50Hz will be supplied at No. 26 El Biadiea El Ollia pump station.

Table 2-2-2(8) Specifications of Motors Motor Specifications No. Name of Pump

Stations Pump Shaft Horsepower

(kW)

Required Power (kW)

Power (kW)

Revolution (rpm)

Number of Pole

Remarks

22 Sahel Alakaba Kebli 27 31 37 1,450 4 Standard type 23 Al Rakikin Sahel 11 13 15 1,450 4 Standard type 24 Blowkher 127 140 150 590 10 Sub-standard 25 El Ghorera 200 220 250 590 10 Sub-standard 26 El Biadiea El Ollia 419 461 460 740 8 Sub-standard

Vacuum Pump

Double suction volute pump requires bleed equipment for priming. Therefore, vacuum pump, which generally be

selected for priming, shall be installed. Following considerations are to be taken for determining the

specifications:

- Similar to the main pump, vacuum pump shall be electric motor-driven and installed with common base.

- Being ready for occasional water supply for vacuum pump, a water service tank shall be equipped.

- For quick and reliable priming, standards type shall be selected.

- Capacity of pump shall be of that the air suction will be finished within two minutes for priming.

Stop Valve


- Either sluice valve or butterfly valve shall be installed at delivery side of pump so as to reduce initial

load to motor by closed pump operation and to maintain air tightness while priming by vacuum pump.

- Considering that valves shall be of standard type, lower cost and easy O&M, valve type of less than 500

mm diameter shall be of sluice and more than 500mm shall be of butterfly.

- Taking account of advantages in continuous operation with less disadvantageous frequent and

intermittent operation and in simple on-off operation without complicated discharge control, valve shall

be of hand-operated for its economy and reliability.

- Valve shall be durable to maximum pressure given by pump.

2 - 20

Check Valve


- In order to stop reverse flow from delivery side upon emergent stoppage of pump by power failure or

other causes, check valve shall be installed at delivery side of pump.

- Check valve shall be of structure not to cause intense water pressure and be of specifications durable to

water pressure.

Main Pipe


- On both suction and delivery sides of pump, main pipes shall serve for connecting pumps, valves, etc.

- Pipe materials shall be steel for the lightness, easy site processing and adjusting.

- For connecting pump, valves, etc., fittings such as tapers, bends, T’s shape pipes shall be employed as

required.

Connecting Pipe (incl. ball joints)


- In order to secure expansibility and flexibility at joints between outlets of pumps and tower, ball joints

on both ends of connecting pipe shall be equipped. Strength of topper shall be increased for protection of

coming-off and caution color paint shall be painted at the expanding portions.

- Smaller pipe bore is favorable for its lightness but excessive flow velocity shall be avoided.

Control Panel


- For protection from wave splash on barge, totally enclosed type with leak prevention shall be employed.

- For easy inspection and maintenance, a door shall be on the front face.

- For protection from sand storms, dust-proof type shall be employed.

- Specifications shall be of the tropics for damp proof during marine freight.

Barge and Pump House


- Provisions presented in the Design Policy shall be referred.

- In accordance with the Rules for the Survey and Construction of Steel Ships, Steel Barges of Nippon

Kaiki Kyokai, structure of barge shall be as presented in the following table:

2 - 21

Table 2-2-2(9) Calculation Formula for Steel Plate Thickness Bottom Plate Thickness t1 (mm)

t1 = 4.7S√d+0.04L + 2.5 S: Interval of longitudinal ribs (m) S = 2L + 450 (mm) L: Total length (m) d: Draught (m)

Side Plate Thickness t2 (mm)

t2 = 4.1S√d+0.04L + 2.5 Minimum thickness = 0.044L + 5.6

Deck Plate Thickness t3 (mm)

t3 = 1.47S√h + 2.5 H: Deck Load (KN/m2)

Other Plate Thickness tmin (mm)

tmin = 6 Minimum dimensions of members are incorporated in chap 23. of the Rules. Shell plating: Smooth water

Buoyancy d1 (tf/m2)

D1 = W0/plane area W0：Total hull weight (tf)

Table 2-2-2(10) Buoyancy Calculation

No. Name of Pump Station L(m) x W(m) Total Weight W0(tf)

Required Draught d1(m)

Planned Draught

d(m) 22 Sahel Alakaba Kebli 13 x 5.5 50 0.70 0.9 23 Al Rakikin Sahel 13 x 5.5 50 0.70 0.9 24 Blowkher 16 x 7.5 75 0.63 1.1 25 El Ghorera 18 x 7.5 100 0.80 1.3 26 El Biadiea El Ollia 18 x 7.5 100 0.70 1.1

Note： L = Length of barge (m)、 W = Breadth of barge (m) In the above, freeboard height 0.7m is given. In order to lower the center of gravity till waterline so as to secure

stable barge balance and to prevent air coming into suction pipe, draught height 0.9m to 1.3m shall be given. Sizes

of barges shall be consequently as follows:

Table 2-2-2(11) Size of Barges No. Name of Pump Stations Length L (m) Breadth W (m) Depth H (m)

22 Sahel Alakaba Kebli 13 5.5 1.6 23 Al Rakikin Sahel 13 5.5 1.6 24 Blowkher 16 7.5 1.8 25 El Ghorera 18 7.5 2.1 26 El Biadiea El Ollia 18 7.5 1.8

Size of pump house shall be determined to being taken account of the size of equipment and height of the crane.

Pump house shall be durable against the supplemental loads by hoist supporting connecting pipe. Pump house

shall be of steel frame with sufficient stiffness not to cause substantial distortion of the frame.

Table 2-2-2(12) Size of Pump House and Main Frame No. Name of Pump Station Length

L (m) Width W (m)

Height H (m)

Size of Main Frame (mm)

Size of Main Beam (mm)

22 Sahel Alakaba Kebli 9 4 4.4 HS 150 x 150 CH 150x 75 23 Al Rakikin Sahel 9 4 4.4 HS 150 x 150 CH 150 x 75 24 Blowkher 12 6 5.7 HS 175 x 175 CH 150 x 75 25 El Ghorera 13 6 5.7 HS 200 x 200 CH 150 x 75 26 El Biadiea El Ollia 13 6 5.7 HS 200 x 200 CH 150 x 75

2 - 22

In accordance with the aforementioned application standards and specifications for equipment, specifications of

pump facilities have been determined as shown in the following tables.

Table 2-2-2(13) Specifications for Planned Pump and Motor

2-2-2-3 Plan of Maintenance Barge

(1) Application Standards

Standards for application to the equipment and works for maintenance barge shall be the current issues of the

followings:

Table 2-2-2(14) Standards for Application

Equipment and Works Standards

Structure of barge Rules of Nippon Kaiji Kyokai (Rules for the Survey and

Construction of Steel Ships, Steel Barges)

Electrical equipment as motor, control boards, etc. Standards of the Japanese Electrical Committee (JEC),

Standards of Japan Electrical Manufacturers Association

(JEM)

Materials and works of equipment, motors, etc. as

well as barge

Japan Industrial Standards (JIS)

(2) Maintenance Barge

Barge and Working House


Present Specifications for Planed Pump Specifications for Planned Motor

No.

Name of Pump

Station Irrigation Area

(feddan)

Water Requirement

(m3/s)

Calculated Total Head

(m)

Capacity per Unit

(m3/s)

Total Head (m)

Number of Unit

Total Capacity

(m3/s)

Power(kW)

Number of Unit

Total Power (kW)

Revolution of Planned Pump and

Motor (rpm)

22 Sahel Alakabe Kebli

300 (Expansion: 50)

0.26 (Apr.) 0.34 (Jun.) 0.20 (Dec.)

8.98 8.31

10.29

0.20 10 2 0.4 37 2 74 1,450

23 Al Rakikin Sahel

250 (Expansion: None)

0.12 (Apr.) 0.17 (May) 0.16 (Jun.) 0.10 (Dec.)

6.80 6.83 5.91 7.90

0.10 8 2 0.2 15 2 30 1,450

24 Blowkher 1,332 (Expansion:400)

0.85 (Jun.) 2.12 (Aug.) 1.04 (Oct.) - (Dec.)

6.47 8.93 7.68

-

1.00 11 2 2.0 150 2 300 590

25 El Ghorera

1,827 (Expansion: None)

0.39 (Apr.) 1.56 (Jun.) 2.93 (Aug.) 0.40 (Dec.)

6.69 5.55 7.65 8.65

1.45 12 2 2.9 250 2 500 590

26 El Biadiea El Ollia

2,554 (Expansion:880)

- (Jun.) 2.61 (Oct.) 1.38 (Nov.) 0.37 (Dec.)

- 26.50 22.73 21.30

1.30 28 2 2.6 460 2 920 740

2 - 23

Table 2-2-2(15) Calculation Formula for Steel Plate Thickness Bottom Plate Thickness t1 (mm)

t1 = 4.7S√d+0.04L + 2.5 S: Interval of longitudinal ribs (m) S = 2L + 450 (mm) L: Length (m) d: Draught (m)

Side Plate Thickness t2 (mm)

t2 = 4.1S√d+0.04L + 2.5 Minimum thickness = 0.044L + 5.6

Deck Plate Thickness t3 (mm)

t3 = 1.47S√h + 2.5 H: Deck load (KN/m2)

Other Plate Thickness tmin (mm)

tmin = 6 Minimum dimensions of members are incorporated in chap. 23. of the Rules. Shell plating: Smooth water

Buoyancy d1 (tf/m2)

D1 = W0/plane area W0：Total hull weight (tf)

Table 2-2-2(16) Buoyancy Calculation

Item L(m) x W(m) Total Weight W0(tf)

Required Draught d1(m)

Planned Draught

d(m) Maintenance Barge 14 x 6.5 65 0.70 0.9

Note: L = Length of barge (m)、 W = Breadth of barge (m) In the above, freeboard height 0.7m is given. In order to lower the center of gravity till water line so as to secure

stable barge balance, draught height 0.9m shall be given. Sizes of barges shall be consequently as follows:

Table 2-2-2(17) Size of Barge

Item Length L (m) Breadth W (m) Depth H (m) Maintenance Barge 14 6.5 1.7

Size of house shall be determined to being taken account of the size of equipment and material and height of the

crane. House shall be durable against the supplemental loads by hoist with loading equipment. House shall be of

steel frame with sufficient stiffness not to cause substantial distortion of the frame.

Table 2-2-2(18) Size of House and Main Frame

Item Length L (m)

Width W (m)

Height H (m)

Size of Main Frame (mm)

Size of Main Beam (mm)

House on Barge 8 5 4.9 HS 200 x 200 CH 150x 75

(3) Equipment and Tools for Maintenance Barge

According to aforementioned section 2-1 “Policy of Basic Design for the Project”, equipment and tools for

maintenance barge shall fully be supplied meeting to the required works, but pay and attention not to be

over-supplied. Main equipment shall be the followings:

a) General Equipment and Tools: Generator, Welder, Cord reel, etc.

b) Grinding Equipment and Tools: Grinder, files, etc.

c) Assembling & Disassembling Equipment and Tools: Gear puller, spanner, wrench, hammer, bearing

heater, etc.

2 - 24

d) Checking & Measuring Equipment and Tools: Steel ruler, convex ruler, dial gauge, thickness gauge,

level, etc.

e) Hanging Equipment and Tools: Wire, lever block, shackle, etc.

f) Equipment and Tools for Electricity: Clamp meter, tester, insulation resister, electric tools, etc.

g) Measuring Equipment and Tools: Vibro meter, noise meter, tachometer, etc.

h) Supporting Equipment and Tools: Tool shelf, emergency light, desk and chair, etc.

Details shall be referred to Table 2-2-2(23-1)～ Table 2-2-2(23-3) “Equipment and Tools for Maintenance

Barge”.

2-2-2-4 Specifications and Quantity of Equipment and Materials

Specifications and quantity of plan’s equipment and materials shall be as follows

Table 2-2-2(19) Specification and Quantity of Plan’s Pump Stations

No.

Name of Pump Station

Pump (m3/s x Head x Unit)

Motor (kW x Unit)

Barge (L)m x (W)m x (D)m

22 Sahel Alakaba Kebli 0.20 m3/s x 10 m x 2

37 kW x 2

13 x 5.5 x 1.6

23 Al Rakikin Sahel 0.10 m3/s x 8 m x 2

15 kW x 2

13 x 5.5 x 1.6

24 Blowkher 1.0 m3/s x 11 m x 2

150 kW x 2

16 x 7.5 x 1.8

25 El Ghorera 1.45 m3/s x 12 m x 2

250 kW x 2

18 x 7.5 x 2.1

26 El Biadiea El Ollia 1.3 m3/s x 28 m x 2

460 kW x 2

18 x 7.5 x 1.8

Maintenance Barge Hull 14(L)m x 6.5(W)m x1.7(D)m

More detailed specifications of pump stations are referred to Tables 2-2-2(21-1)～2-2-2(21-5), and maintenance

barge to Table 2-2-2(20-6).

2 - 25

Table 2-2-2(21-1) Specifications of Plan’s Pump Stations

No. 22 Sahel Alakaba Kebli Pump Station

No. Description Specifications Quanity

1 Main Pump

(with Main Motor)

Double suction volute pump

0.20m3/s x 10m

Suction:φ300mm, Delivery:φ250mm

Totally enclosed, Squirrel cage,

37kW, 4P, 3-phase, 380V, 50Hz

with common bed and coupling

2 sets

2 Vacuum Pump

(with Motor)

0.3m3/min, φ25mm

with water service tank

0.75kW, 4P, 3-phase, 380V, 50Hz


2 sets

3 Sluice Valve Manual, gate valve

φ300mm

2 units

4 Check Valve Rapid closing type

φ300mm

2 units

5 Suction & Delivery Pipes Steel pipe, with flanges

φ250～φ400mm

1 set

6 Control Panel

(for pump starting)

Self-standing, steel panel

Pump starting circuit, Star-delta circuit

Control circuit

1 set

7 Barge

(inc. pump house)

Steel hull structure

13m x 5.5m x 1.6m

Steel frame structure, eave height: 4.0m

9m x 4m x 4.4m

1 unit

8 Connecting Pipe

(incl. ball joints)

Steel pipe, φ400mm

with ball joints at both ends

1 set

9 Scouring Pump Submersible pump, φ50mm

3.7kW, 4P, 3-phase, 380V, 50Hz

with hose and nozzle

1 unit

10 Spare Parts

1 lot

2 - 26


No. 23 Al Rakikin Sahel Pump Station

No. Description Specifications Quantity

1 Main Pump

(with Main Motor)


0.10m3/s x 8m


Totally enclosed, Squirrel cage

15kW, 4P, 3-phase, 380V, 50Hz


2 sets

2 Vacuum Pump

(with Motor)

0.3m3/min, φ25mm


0.75kW, 4P, 3-phase, 380V, 50Hz


2 sets

3 Sluice Valve Manual, gate valve

φ250mm

2 units


φ250mm

2 units


φ200～φ300mm

1 set

6 Control Panel

(for pump starting)



Control circuit

1 set

7 Barge

(incl. pump house)


13m x 5.5m x 1.6m


9m x 4m x 4.4m

1 unit

8 Connecting Pipe

(incl. ball joints)

Steel pipe, φ300mm


1 set


3.7kW, 4P, 3-phase, 380V, 50Hz


1 unit

10 Spare Parts

1 lot

2 - 27


No. 24 Blowkher Pump Station


1 Main Pump

(with Main Motor)


1.0m3/s x 11m

Suction: φ700mm, Delivery:φ600mm


150kW, 10P, 3-phase, 380V, 50Hz


2 sets

2 Vacuum Pump

(with Motor)

0.7m3/min, φ32mm


1.5kW, 4P, 3-phase, 380V, 50Hz


2 sets

3 Sluice Valve Manual, butterfly valve

φ700mm

2 units


φ700mm

2 units


φ600～φ700mm

1 set

6 Control Panel

(for pump starting))



Control circuit

1 set

7 Barge

(incl. pump house)


16m x 7.5m x 1.8m


12m x 6m x 5.7m

1 unit

8 Connecting Pipe

(incl. ball joints)

Steel pipe, φ700mm


2 sets

9 Scouring Pump Submersible pump φ50mm

3.7kW, 4P, 3-phase, 380V, 50Hz


1 unit

10 Spare Parts

1 lot

2 - 28


No. 25 El Ghorera Pump Station

No. Description Specifications Qunatity

1 Main Pump

(with Main Motor)


1.45m3/s x 12m



250kW, 10P, 3-phase, 380V, 50Hz


2 sets

2 Vacuum Pump

(with Motor)

0.7m3/min, φ32mm


1.5kW, 4P, 3-phase, 380V, 50Hz


2 sets


φ800mm

2 units


φ800mm

2 units


φ700～φ800mm

1 set

6 Control Panel

(for pump starting)


Pump starting circuit, Reactor circuit

Control circuit

1 set

7 Barge

(incl. pump house)


18m x 7.5m x 2.1m


13m x 6m x 5.7m

1 unit

8 Connecting Pipe

(incl. ball joints)

Steel pipe, φ800mm


2 sets


3.7kW, 4P, 3-phase, 380V, 50Hz


1 unit

10 Spare Parts

1 lot

2 - 29


No. 26 El Biadiea El Ollia Pump Station


1 Main Pump

(with Main Motor)


1.30m3/s x 28m

Suction: φ700mm, Delivery: φ500mm


460kW, 8P, 3-phase, 6000V, 50Hz


2 sets

2 Vacuum Pump

(with Motor)

0.7m3/min, φ32mm


1.5kW, 4P, 3-phase, 380V, 50Hz


2 sets


φ700mm

2 units


φ700mm

2 units


φ500～φ700mm

1 set

6 Control Panel

(for pump starting)


Pump starting circuit, Reactor circuit

Control circuit

1 set

7 Barge

(incl. pump house)


18m x 7.5m x 1.8m


13m x 6m x 5.7m

1 unit

8 Connecting Pipe

(incl. ball joints)

Steel pipe, φ700mm

With ball joints at both ends

2 sets


3.7kW, 4P, 3-phase, 380V, 50Hz


1 unit

10 Spare Parts

1 lot

2 - 30

Table 2-2-2(22) Specifications of Proposed Maintenance Barge


1 Barge

(incl. house)


14m x 6.5m x 1.7m


8m x 5m x 4.9m

1 unit

2 Equipment and Tools for

Maintenance Barge

(a) General Equipment and Tools

(b) Grinding Equipment and Tools

(c) Assembling & Disassembling Equipment

and Tools

(d) Checking & Measuring Equipment and

Tools

(e) Hanging Equipment and Tools

(f) Equipment and Tools for Electricity

(g) Measuring Equipment and Tools

(h) Supporting Equipment and Tools

1 lot

Note: More detailed specifications for equipment and tools for maintenance barge are referred to Table 2-2-2

(23-1) “Equipment and Tools for Maintenance Barge”

Description Quantity Specification

1

1 1 Generator 1 Soundless Type,3P,200V,25KVA/1P,100V,3KVA

2 2 Cord reel 2 Built in breaker, 30m, 2P, 15A, 125V

3 3 Arc welding machine 1 for 1.6-4mm, Inverter control, DC type,3P,220V,8.3KVA, 20-200A

4 4 Color splay 1 set cleaner, penetrating, developping;approx. 420ml each

5 5 Working table with vice 1 1800×900×740mm,load: for 3000kg

2

6 1 Bench grinder 1 two-grinder tyep,150mm, 3000rpm, 100V,approx. 0.75kW, with eye shield

7 2 Portable grinder 1 dia. 100mm, 3000-11000rpm, 680W

8 3 Flap wheel with spindle 1 lot 10 kinds x 5 pcs/pack

9 4 Electric drill 1 13mm, 1400rpm, 100v, 530W

10 5 Cut files Bastard 1 set 215mm/110mm; 5pcs/set

11 6 Cut files Smooth 1 set 215mm/110mm; 5pcs/set

12 7 Sandpaper 1 lot #30, #50, 50 sheets/each

3

13 1 Gear puller 1 set Working Width; 275mm,320mm, 370mm three kinds

14 2 Gas torch 1 Handy type, auto ignition, 270gwith 12 cartridges

15 3 Impact wrench 1 Battery operated, 1300kgf torque,Capacity 14AH, with battery

16 4 Doble ended wrench 1 set 11x13, 14x17, 19x21, 212x23,23x26, 26x29, 29x32, 32x36; 8 kinds

17 5 Single ended wrench 1 set M36,M38,M41; 3 kinds

18 6 Various wrench 1 set 13x17, 19x21, 22x27x32x35; 4 kinds

19 7 Pipe wrench 1 set 200mm for 1-1/4inches450mm for 3 inches; 2 kinds

20 8 Monkey wrench 1 set 150mm for 20mm dia.308mm for 34mm dia.: 2 kinds

21 9 Socke wrench 1 set M10 ～M30, 13pcs

22 10 Hammer 2 #2 (900g）

23 11 Shhockless hammer 1 set #3 (1.35kg), #6 (2.7kg), 1 each

Assembling & Disassembling Equipment andTools

Table 2-2-2(23-1) Equipment and Tools for Maintenance Barge (1/3)

No.

General Equipment and Tools

Grinding Equipment and Tools

2 - 31


24 12 Screw driver （＋，－） 2 sets shaft length: 100mm, 150mm, 300mm2 kinds each 3 pieces

25 13 Hook spaner 1 set 65/70, 75/80, 85/92, 105/115, 120/1305 kinds

26 14 Packing tool 2 steel made, L=270mm, composed of dia. 7mm flexibleshaft, cork screw and handle

27 15 Hexagon wrench 1 set 1.5, 2, 2.5, 3, 4, 5, 6, 8mm; 8 kinds

28 16 Cutting plier 1 set L=125mm, 200mm; 2 kinds

29 17 Plier 1 set L= 150mm, 200mm; 2 kinds

30 18 Snap ring plier 1 set straight tip type, external 80.2-101.6mminternal 77.8-158.8mm; max. spread 36.5mm; 2 kinds

31 19 Pin punch 1 set 22, 32, 38mm; 3 kinds

32 20 Molykote Lubricants 12 splay type, 330ml, 12pcs per package

33 21 Grease gun 2 lever type, for 200ml

34 22 Bearing heater 1 size 236Hx158Wx372L, 100V, for inside dia.20mm or over, with carrying case

4

35 1 Steel ruler 1 set JIS 1 class; L=300mm,1000mm: 1 each

36 2 Convex ruler 1 set 13mmx2M, 16mmx5.5M; 1 each

37 3 Thermometer 10 Alcohol type, 0～100℃

38 4 Dial gauge with stand 1 set range 10mm, accuracy 0.01mm,with stand (range: 15mm-210mm)

39 5 Thickness gauge 2 L=150mm, 0.03-0.40mm, 10 sheets type

40 6 Taper gauge 2 L=160mm, range 1.0-15.0mm,accuracy 0.10mm

41 7 Crowbar 2 L=900mm, approx. 2.4kg

42 8 Portable hydraulic jack 1 for 5 ton, range: 160mm height

43 9 Shim 1 set copper sheet�365×1200mm／5 kinds

44 10 Level 1 L=200mm, accuracy 0.02mm

5

45 1 Wire rope 4 dia. 20mm×5m

46 2 Belt sling 2 sets 25mmx 5M, 50mm×5M�2 kinds

47 3 Lever block 1 for 1.5 ton, range: 1.5M

Checking & Measuring Equipment and Tools

Hanging Equipment and Tools

No.


2 - 32


48 4 Shackle 2 sets inside width 8mm, 12mm, 18mm�3 kinds

49 5 Hand truck 1 for 150kg loading, with four casterswith pedal stopper

6

50 1 Clamp meter 1 digital handy type, with caserange: AC600A, AC600V,1k/10k ohm

51 2 Tester 1 digital handy type, with caserange: AC or DC1000V, 42M ohm, 400kHz

52 3 Insulation resister 1 digital handy type, with caseMax. measuring current: 1.2mA or less

53 4 Cutting plier 2 L=200mm

54 5 Nipper 2 L=150mm

55 6 Wire stripper 2 for 1.25-5.5mm2

7

56 1 Vibro meter 1digital hady type, with case; range: 0.1-999.9µmp-p, 0.001-9.999cm/s, 0.01-99.99m/s2

57 2 Noise meter 1 digital handy type, with caserange: 35-130 db

58 3 Tacho meter 1 digital handy type, with caserange: 0-100,000rpm

59 4 Thickness checker 1 digital handy type, supersonic type, with caserange: 0.8-100mm, accuracy: 0.1mm+1.5%

60 5 Paint thickenss checker 1 digital handy type, with case,range: 0-3.00mm, accuracy: 1µm and/or 0.01mm

8

61 1 Tool shelf 1 811×556×1280,9 drawers

62 2 Emergency light 3 Battery (C-1, 3 pcs) type, handy,with batteries

63 3 Desk & chair 1 set 900×600×600mm, steel type,with rubber cushions, with 2 chairs

64 4 Fire extinguisher 2 ABC powder type, 510mm height3.5g chamical, weight: 6.4kg

64 items

Measuring Equipment & Tools

Supporting Equipment & Tools

Total

Equipment and Tools for Electricity

No.


2 - 33

Documents

Chapter 2. Contents of the Projectopen_jicareport.jica.go.jp/pdf/11705639_06.pdf · 2004-05-06 · 2-1 Chapter 2 Contents of the Project 2-1 Basic Concept of the Project 2-1-1 Objectives